The kitten was calculating the jump up to the platform, which he did. It's easy to see, hehe. He was 4 weeks old when this shot was taken, and it was just starting to rain. View in black, if possible.
The way the "blades" of cat's pupils close is very different to the way they close in a camera lens - they don't make a circle as in our eyes, or the camera's lens. The cat's version has a very remarkable design, since they can see so well in the dark.
Exif: ISO 100 ; f/4 ; 1/320 ; @94mm